Other models have previously been theorized to protect Bitcoin from quantum computing.
Experts point out that the first desktop quantum computer is years away.
A team of researchers from Australian and US universities, in collaboration with quantum technology company BTQ, published a new approach to the proof-of-work (PoW) consensus mechanism based on boson sampling.
In the study published This June 1 explains that the proposed proof-of-work system, dubbed “quantum sampling proof-of-work consensus,” takes advantage of quantum computing techniques to achieve faster and more energy-efficient consensus validation.
Traditional PoW algorithms used in cryptocurrencies such as Bitcoin (BTC) are characterized by their slow processing speed and high energy consumption. However, according to the researchers, will be considerably more efficient in energy terms when implemented in quantum hardware. Taking into account that the Bitcoin network consume more energy than countries like Chile or Bolivia, this model could be a more ecological solution.
The study also notes that the proposed system increases mining difficulty as more quantum mining machines are added to the network, thus ensuring a consistent block mining time, just as is the case with PoW algorithms today.
The proposal is to use a consensus protocol with boson Sampling, which so far has proven to be the most efficient quantum algorithm. In 2020, a test of this system confirmed how a quantum computer was able to reduce 600 million years in a traditional computer to just 200 seconds.
Shielding in Bitcoin against quantum computing
Peter Rohde, a researcher at the University of Technology Sydney and co-author of the paper, commented that the study is not focused on creating a replacement for the current PoW algorithms, but on a demonstration that it is possible to create them, once the era of quantum computing begins.
In relation to the latter, there have been many arguments that Bitcoin will cease to exist, since quantum computing would break its cryptography. This has led researchers to develop models of this type, as reported by CriptoNoticias. Adam Back, CEO of Blockstream, has commented that quantum computing does not pose any danger to Bitcoin.